Device to classify solid particles dispersed in flow medium has separating component formed as helically coiled spring with through-passage between coils and width of gap changed by axial adjustment of spring length

摘要

The classifying device's separating component is formed as a helically coiled spring with a through-passage between the coils. The width of the gap can be changed by axial adjustment of the length of the spring. The spring may have different elasticity in different sections of its length. Several springs may be connected one behind the other in the axial direction. The spring coils have a form which deviates from circular, and may be rectangular or elliptical.